To obtained fungal resources with excellent tolerance and accumulation capacity to rare earth yttrium ions (Y3+), rare earth ore samples were collected and used for microbial screening. A fungus hyper-resistant to Y3+ was obtained and the effects of the fungus in three physiological states (growth process, mycelial pellets with physiological activity and the fungus powder after being ground) on the Y3+ accumulation were investigated. The Y3+ resistant fungus was identified as Penicillium sp. ZD28, and its mycelium pellets (about 1 mm in diameter) showed poor ability to accumulate Y3+ with an adsorption capacity of less than 81 μmol/g. However, the fungus was able to remove 99% of Y3+ during the growth process, at an initial concentration of less than 600 μM. Bioaccumulation of Y was observed on the cell surface of the ZD28 strain by elemental mapping using scanning electron microscopy-energy dispersive X-ray spectroscopy. The adsorbent (the dry fungal powder) had a remarkable adsorption property for Y3+ that was greater than 455 μmol/g in conditions of 465 μM < [Y3+] < 6382 μM. Penicillium sp. ZD28 has major potential applications in the accumulation of yttrium group rare earth ions. This research has formed a theoretical foundation for the application of this biological method to extract rare earth ions in the mining and smelting of yttrium group rare earth elements.

中文翻译：

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青霉菌对稀土钇离子的积累 ZD28。

为了获得对稀土钇离子（Y3 +）具有优异的耐受性和累积能力的真菌资源，收集了稀土矿石样品并用于微生物筛选。获得了一种对Y3 +具有高抗性的真菌，并研究了真菌在三种生理状态（生长过程，具有生理活性的菌丝体沉淀和研磨后的真菌粉）对Y3 +积累的影响。抗Y3 +的真菌被鉴定为青霉菌。ZD28及其菌丝体小丸（直径约1毫米）显示出不佳的Y3 +累积能力，吸附容量小于81μmol/ g。但是，这种真菌能够在生长过程中以低于600μM的初始浓度去除99％的Y3 +。通过使用扫描电子显微镜-能量色散X射线光谱的元素图谱，在ZD28菌株的细胞表面上观察到Y的生物积累。吸附剂（真菌干粉）在465μM<[Y3 +] <6382μM的条件下，对Y3 +的吸附性能显着高于455μmol/ g。青霉菌 ZD28在钇族稀土离子的积累中具有重要的潜在应用。该研究为该生物方法提取钇离子在钇族稀土元素的开采和冶炼中的应用奠定了理论基础。6382微米 青霉菌 ZD28在钇族稀土离子的积累中具有重要的潜在应用。该研究为该生物方法提取钇离子在钇族稀土元素的开采和冶炼中的应用奠定了理论基础。6382微米 青霉菌 ZD28在钇族稀土离子的积累中具有重要的潜在应用。该研究为该生物方法提取钇离子在钇族稀土元素的开采和冶炼中的应用奠定了理论基础。